Community Tip - Tools and Resources

Introduction
Use the tools & resources collected by Cloudflare Community MVPs in this tool tip to help you implement, use, and troubleshoot Cloudflare.

This is a Cloudflare Community Tip. Community Tips address best practices when configuring Cloudflare, how to fix issues you may see, and tools to use to help you troubleshoot. See all Community Tips.

CLI Multi-Tools
htrace.sh

Multi-Tools
Cloudflare Diagnostic Center
keycdn
CentrolOps.net
TurboBytes
UltraTools
Google Application Security
BGP Stream
@BGPStream

Cloudflare Status
Cloudflare Status

Cloudflare Datacenter Reachability
Tool
Explanation

Cloudflare Apps
Store
Developers
Docs

Browsing Experience Security Check
Cloudflare Security Check

Browser & Browser Plugins
What’s My Browser
Claire, Is Site Using Cloudflare?
Dr.FLARE debug tool for Cloudflare (Chrome Extension)

cURL
Everything curl - the book
Using cURL when Troubleshooting with Cloudflare

dig
DigWebInterface
DNS Sleuthing with dig

DNS
$ dig ns example.com +short
Generate TLSA Record
whatsmydns
DNS Checker
IntoDNS
MxToolbox SPF Record Generator
UltraTools DNS Lookup
DNSape

Historical DNS
SecurityTrails
censys
VirusTotal

DNS Non-HTTPS Links
DNSViz

DNS-over-HTTPS (DoH)
Simple DNSCrypt
Cloudflared

DNS-over-TLS (DoT)
Stubby
unbound
Knot Resolver

DNSSEC
Verisign DNSSEC Analyzer

eMail
MxToolbox
Microsoft Remote Connectivity Analyzer
DMARC Domain Checker
fraudmarc
DKIM Core Tools
proofpoint
Google Postmaster Tools
SPF Generator
Vamsoft
SparkPost
MultiRBL

eMail Quality Tests
Spammyness Test

eMail Header Analyzer
MxToolbox Email Header Analyzer

Detecting HTTPS Interception
MITMEngine
MALCOLM
About

Peering
Hurricane Electric BGP Toolkit
PeeringDB Cloudflare

Privacy Pass
Get Privacy Pass
Cloudflare Supports Privacy Pass
Privacy Pass 2.0

SSL
SSL Labs Server Test
Dev Version SSL Labs Server Test
CDN77 TLS Test
Cloudflare SSL Test
BadSSL

Performance
Minify
WebPagetest
Read How to use webpagetest.org for page load speed testing
Latency
Pingdom
GTmetrix
Cloudflare Webpage Speed Test Tool
Critical Path CSS Generator
Think With Google
Sucuri
Cloudflare Connection Speed Test

Trace
WinMTR
http://www.example.com/cdn-cgi/trace
$ traceroute example.com
$ dig example.com +trace

Uptime
Hyperspin

Website
HOSTS.CX
Hardenize
Mozilla Observatory
Search Engine Spider Simulator
BROWSEO
Bot Simulator
Redirect Tracker
Safe Browsing site status
ShotSherpa - your website around the world
WebSitePulse

Wordpress Tests
varvy

1.1.1.1 Tests
Read Me First
1.1.1.1 Diagnostic Tool
Developers

IP
IP WHOIS Lookup
IP Reputation Investigation
Project Honey Pot
Composite Blocking List
Cloudflare IPs
About Classless Inter-Domain Routing
Learning Center - Anycast Network
Help Center - How Cloudflare Works

Background & Research Resources
Cloudflare Help Center
Cloudflare Community search
Cloudflare Learning Center
Cloudflare Developers
Google
YouTube
Command Line Power User - Free video tutorials

Helpful On Support Tickets
HAR file(s)

Helpful Tests, Links and Commands
$ dig @1.1.1.1 ch txt whoami.cloudflare +short
$ dig +short @2606:4700:4700::1111 -6 ch txt whoami.cloudflare
$ curl -svo /dev/null https://example.com/
$ curl -svo /dev/null --resolve example.com:443:123.123.123.123 https://example.com/
$ curl -svo /dev/null --resolve example.com:80:123.123.123.123 http://example.com/
$ curl -svo /dev/null https://example.com --tlsv1.0
$ curl -svo /dev/null https://example.com --tlsv1.1
*Replace example.com with your domain & 123. with your origin IP address

Lite Reading

If You Need More Help
These tools and help from this community of other Cloudflare users may help, if you still need further assistance, login to Cloudflare and then contact Cloudflare Support. When you contact support, make sure to include links to your community posts to help the Support Engineer help you.

Expert Comments Appreciated
This Community Tip will remain open for input from Community experts and those familiar with this issue. We really appreciate comments like: “What are the three things to always try” or “Do this first” or “In my experience”.

This is a Cloudflare Community Tip, review other tips here.

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